Vitrach aluminum sprocket, 4-hole type, approximately 20cm in diameter. This is a sprocket for turning the starter motor of a motor paraglider engine, Vitrach, for Mr. Please use it when replacing. Spare part. - Type: Sprocket - Diameter: Approximately 20 cm - Number of holes: 4 - Material: Aluminum - Application: Starter motor parts I believe this is a used item, so please refrain from purchasing if you are concerned about its condition. The item in the photos is what you will receive. No claims and no returns accepted. If you would like more detailed information, please call the following contact number. Email is difficult to understand, so please call. Takashi Ito, Chairman of Tokai Sky Club 090-3968-5637 Thank you for viewing.